williams



@uitrit glatte gutem @ffice Letters .Patent No. 80,260, dated July 21,1868.

.IMPROVED PAVEMENT.

ilge tlgtiule interna tu in that fetttrs ateut tnt mating part ai thesamt.

ro ALL WHOM IT MAY CONCERN:

Be it known that I, CJVILIQIAMS, of the city, county, and State of `NewYork, have invented certain new and useful Improvements in Pavexnents;and Ido, hereby declare that the. following 4is `a full, clear, andexact description of the same, reference being had tothe accompanyingdrawings, making a portion` of this specification, in which,

Figure 1 is a plan view of a pavement constructed accordingto myinvention. Figure 2 is a vertical transverse'section of' the same, takenin the line zza: of g. 1. Figure ES is :rn edge view and partial sectionoi' the same, taken at rightangles to hg; 2

Similar letters of reference indicate corresponding parts iu all thofigures. V Y This` invention relates to that variety of pavement,formedi'or the most part of- `wooden blocks placed ouend,and theinvention'consists in the construction ofthe pavement of sections formedof wooden blocks, securely locked together', whereby the pavement may'belaid down and taken up with much greater readiness than when the blocksare continuously joined together, without in the least detracting fromthe stability ofthe pavement. The invention further consists in theconstruction of the paving-blocks with vertical holes, filled with e.hard cement of any suitable kind, whereby a very secure foot-hold isafforded to horses or other'draughbanimals travelling thereon. i v Theinvention further consists in locking-keys, made rectangular in theircross-section, and so combined lwith the paving-blocks that the latterare not only'in a measure supported against downward pressure,l but mayalso be much more easily detached or separated from each other, when,for any reason, it is desired to .take upartthe sections just mentioned,than would he possible if the aforesaid keys were made of dove-tailform. l v The invention further consistsin a novel construction of thesub-sills or substructure, which supports'the blocks or'sections,whereby theI substructure may be conveniently laid down'and taken up,without necessitating the removal oi'adjacentportions of the pavement,and whereby a. material reduction in the quantity of lumber required forsuch substructure is secured.

To enable others to understand the nature and construction of myinvention, I will proceed to describe it, with referencento thedrawings. l y The pavement is'formed of sections,'one of '.vhich isshown each of the figures, und which urelformed of wooden paving-blocks,A,.which are placed `on end, and which are` preferably made ofrectangular form. The 4sides. or edges of each of these blocks arefurnished with n'arrow rebates, d, at the lower part of each one ofwhich is a rectangular' groove, b. Formed in the-uppersiile of each ofthe blocks Afand arranged with referenceV to euch other, ie; anysuitable or desired manner, aren. 'number of deep hol'es c,'livhich arefilled with auyiq'ipro# priate hard cement, indicated at a*, the saidcement being, however, mide, by preference, of coal-tar and sand orgravel, or of some iikc material, wvhich ivill'exert a more r lesspeservative action upon the wood. The coment in the holes e is designedto wear a'wny somewhat faster from the. effects of'travel uponV theVpavement than the surface of the blocks A, -so that recesses ordepressions are formed in" the .surface ofthe pavement, which insure agood foothold for the draught or other animals traversing the same; 'i

'lhc aforesaid blocks being placed side by side, as represented morefully' iri'fig. 41, dat wooden keys, shown at B, in iig. 2, and maderectangular ih their cross-section, are driven into the adjacent groovesb, the two oppo site edges of cachkey fitting into the tivoloppositegrooves of adjacent sides of the blocks, inthe manner represented inthciig. 2, just mentioned, so that the edges or sides of the blocksbeing by these lmeans locked together, each oi' the blocks is innlmeasure supported by the others against the downward pressure of theanimals or vehicles passing over the same, at the same time that, whenit. is desired to separato the blocks, as, for'instancc, iri repairingthe pavement, the said blocks may be forced laterally from cach other,thus, in many i cases, obvinring the necessity of taking up an entireisectiorx" in making such repairs, and, furthermore, by closing thejoints between the lower portions of adjacent blocks, renders thopavement.- or rather-.the sections l composing the same, practicallywater-tight.' i

.planks o'r sills C are required only underneath the joints between thebloeksor sections,

i somo 2 Tue grooves or'ohannels formed between the blocks by thecomin'gtogether of the'rebutes a thereof, are llcd, as shown otd, with acement, the same or similarto tbatwith which the holes c arc filled, asherelnbefore fully set forth, the said cement-filled grooves beingsupplemental, as it were, to the aforesaid holes c, inpro vidinga-'foo't-hold-for the draught or other animals traversingthe pavement.

A suicient number of the blo'clrs A are thus put together to form arectan motion, of any desired'or convenient. size, the said sectionsbeing, in the`.construetion of, tho pavement, laid down with their edgessnugly in contact, inl suoha way that each section-may be taken upseparately without disturbing theA others, while the greater surface of"the sections, as compared with that of the separate blocks, renders thepavement much more iirm and 'stable than would be tle case if the bloekswere laid down separately.

I'n order that the-aforesaid sections shll be more eii'eetunllysupported in' proper positionwith regard to each other, la series ofsub-lills, or,'in ot her words,1al substructure, composedof planksLC; ofany suitable widthand thidkness; is laid underneath. the same, thejoints between the ends of oooh series 'of planks or sills bre'alkingjoints withthejcontiguous one, such planks or sills being arranged' i'n'n position parallel with 'each other, as shown in dotted outline iniig..1', and under the joints, between the blocks 'of the severalsections, as Aalso indicated in figs. and-`3;- but,'if preferred, the'saidsills or planks maybe placed only underneath thepsralieljointsbetween the sections,A the sills, when thus employed,securing the same'rosult as whenused; in the'manner first hereindescribed,-bnt. possibly in a somewhat inferior degree. 'liurthemorminasmuch as the as, the ease maybe, notion than' would be the case'ifthe subgulnr or other properly-shaped it follows .that much less timberlor material isfrequired i'n their oonstr st--ffure formed a continuousilooring underneath the'l aforesaid blocks or sections What -I claim asmy invention, and desire toseeure'byLetters Patent, is i The arrangementand formation of spa/:ies d, between and 'around the blocks A,.bymeansfof grooves b am keys, B, in combination with the rabbeted sides' aof'said blockssubstantially as sot forth o v C. WILLIAMS. Witnesses r AJ. W. Cooles, Gi. W Reso.

